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View Diary: The Daily Bucket - there's a naked lady in my frontyard (69 comments)

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  •  Many insects, particularly those that are (5+ / 0-)

    pollinators, can see and are attracted wavelengths in to the ultraviolet spectrum, because many flowers reflect ultraviolet light (or refract or have an excitation in that spectrum, not sure). You know, just another example of that evolution thingy. Like the moth with the foot long tongue that Darwin and Wallace predicted.

    In politics you've got to learn that overnight chicken shit can turn to chicken salad - LBJ

    by huntergeo on Sat Aug 04, 2012 at 04:01:44 PM PDT

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    •  But any insects that are attracted to ultraviolet (3+ / 0-)

      would almost certainly be diurnal in nature, no?

      Just give me some truth. John Lennon--- OWS------Too Big To Fail

      by burnt out on Sat Aug 04, 2012 at 04:21:20 PM PDT

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      •  I think cause and effect have gotten a bit muddled (3+ / 0-)
        Recommended by:
        6ZONite, Polly Syllabic, burnt out

        in this thread.  Happens all the time when evolution is being discussed.  Done it many times myself.

        Insects have vision that is sensitive to somewhat shorter wavelengths of light than our own vision.  As far as I know this is true across all insects including groups that don't pollinate flowers.  It seems more likely that the flower patterns evolved in response to insect vision rather than the other way around.

        Attraction to light at night is thought to be a side product of using the moon or stars for navigation.  Unfortunately for the insect a porch light is a lot closer than the moon and they end up reaching the light source and don't 'know' what to do next.

        The use of black lights is based on the assumption that nocturnal insects are more attracted to light with a UV component (many of the insects drawn to black lights are also active in the day).  I don't know if anyone has actually tested this.

        "We are normal and we want our freedom" - Bonzos

        by matching mole on Sat Aug 04, 2012 at 05:20:06 PM PDT

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        •  If you get many diurnal insects come into your (3+ / 0-)

          black light then I can finally see a reason for using one. I've been trying to figure that out since the first time I heard of it. I occasionally see daytime active insects come to the porch light but those are definitely the exception to the rule.  So thanks for  the explanation.

          Just give me some truth. John Lennon--- OWS------Too Big To Fail

          by burnt out on Sat Aug 04, 2012 at 05:39:24 PM PDT

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          •  It's mostly diurnal insects that don't fly (3+ / 0-)
            Recommended by:
            Polly Syllabic, 6ZONite, burnt out

            very much except to disperse to new areas that you get at black lights in my experience.  Things like aquatic insects, a lot of beetles, some true bugs and hoppers.  You don't generally get very many insects that fly around actively in the day - diurnal flies and wasps, bees, butterflies.  Things like that generally don't come to black lights.

            "We are normal and we want our freedom" - Bonzos

            by matching mole on Sat Aug 04, 2012 at 05:59:12 PM PDT

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            •  Beetles, especially the brown June bugs, not sure (1+ / 0-)
              Recommended by:
              Polly Syllabic

              or their proper name, and also, surprisingly to me, quite a few lady bugs, come to the porch light pretty often. I occasionally see dobsonflies also,but not very often. Don't recall seeing any hoppers except a few very tiny ones. I don't remember any true bugs.  Oh yes, and lots of Mayflies if there happens to be a recent hatch.

              Just give me some truth. John Lennon--- OWS------Too Big To Fail

              by burnt out on Sat Aug 04, 2012 at 06:47:57 PM PDT

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